We've all heard from other threads about other posters' favorite money changers with the best exchange rates (and I believe the consensus was Super Rich Co. across Central World).

How about the best travel agencies with the best deals and/or cheapest tickets?

From your experience, which travel agency is it, and where? What ticket exactly did you buy, and to go where?

Cheers!

it's easier with money exchangers, but with the travel agents it's more complicated.

each of them cooperates only with some airlines, so if there is a special deal on some other airline the agency won't even know. You have to check with many agencies each time - from my experience they rarely answer emails and making tens of phone calls takes time. Some phones are never answered, some will take your phone number and call you back with a quatation (or not). For the last few years I just search and book on the net and usually book directly with an airline, which gives me an advantage of changing return ticket if I am delayed and gives me airmiles.

Depends on which agency you use. Most agents have access to nearly all airlines, with the exception of low-cost airlines like One-Two-Go and Air Asia. Some agents are unable to book domestic tickets on Thai Airways - other than that you should not have an issue.